In October, Hardee, who had been living in Harney County, pleaded guilty to 15 charges, including carjackings, burglary robbery and identity theft. In 2011, Hardee held a .357-caliber revolver to the head of a cab driver and stole the victim's wallet and car. He also posed as interested in buying a Happy Valley man's Mustang, then stole the car at gunpoint.

While awaiting trial on those charges, Hardee got into a fight with another inmate. The fight was captured on video, leading to earlier convictions for two co-defendants.

Defense attorney Ronald L. Gray told the court that a co-defendant received three years' probation because there were no serious physical injuries and no weapons were involved.

"As a matter of practicality, you have someone incarcerated until 2037," Gray said. "Adding (30) months to his sentence doesn't make a lot of sense."

However, Deputy District Attorney Bryan J. Brock told the court Oregon law didn't specifically address Hardee's former status, but said defendants in similar situations have received consecutive terms. He said if Hardee didn't get additional prison time, there would be no disincentive for him to assault inmates.